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Incidence (annual) of Prolactinoma: less than 14 per 100,000 (the rate for pituitary tumors) Incidence Rate of Prolactinoma: approx 1 in 7,142 or 0.01% or 38,080 people in USA [about data] Prevalance of Prolactinoma: Clinically significant pituitary tumors affect the health of approximately 14 out of 100,000 people.
